test(#517): add AuthLoginViewModel state-update unit tests (rebase onto main) (#517)

app/src/test/java/com/m57/hermescontrol/ui/authlogin/AuthLoginViewModelTest.kt

@@ -0,0 +1,69 @@
+package com.m57.hermescontrol.ui.authlogin
+
+import android.app.Application
+import com.m57.hermescontrol.data.local.AuthManager
+import com.m57.hermescontrol.data.remote.OkHttpProvider
+import io.mockk.every
+import io.mockk.mockk
+import io.mockk.mockkObject
+import io.mockk.unmockkAll
+import okhttp3.OkHttpClient
+import org.junit.After
+import org.junit.Assert.assertEquals
+import org.junit.Assert.assertFalse
+import org.junit.Assert.assertNull
+import org.junit.Before
+import org.junit.Test
+
+class AuthLoginViewModelTest {
+    private lateinit var viewModel: AuthLoginViewModel
+    private val app = mockk<Application>(relaxed = true)
+
+    @Before
+    fun setup() {
+        mockkObject(AuthManager)
+        every { AuthManager.getHost() } returns "localhost"
+        every { AuthManager.getPort() } returns 9119
+        every { AuthManager.getConnectionProfiles() } returns emptyList()
+
+        mockkObject(OkHttpProvider)
+        every { OkHttpProvider.probe } returns mockk<OkHttpClient>(relaxed = true)
+
+        viewModel = AuthLoginViewModel(app)
+    }
+
+    @After
+    fun teardown() {
+        unmockkAll()
+    }
+
+    @Test
+    fun `onHostChange updates host and clears error and auth mode`() {
+        viewModel.onHostChange(" 192.168.1.100 ")
+
+        val state = viewModel.uiState.value
+        assertEquals("192.168.1.100", state.host)
+        assertNull(state.errorMessage)
+        assertNull(state.authMode)
+    }
+
+    @Test
+    fun `onPortChange updates port keeping only digits and clears error and auth mode`() {
+        viewModel.onPortChange("9a1b1c9")
+
+        val state = viewModel.uiState.value
+        assertEquals("9119", state.port)
+        assertNull(state.errorMessage)
+        assertNull(state.authMode)
+    }
+
+    @Test
+    fun `clearConnectionState resets connectionSuccess errorMessage and isLoading`() {
+        viewModel.clearConnectionState()
+
+        val state = viewModel.uiState.value
+        assertFalse(state.connectionSuccess)
+        assertFalse(state.isLoading)
+        assertNull(state.errorMessage)
+    }
+}